两个遥远的地中海地区休眠和活跃浮游动物的元群落结构

IF 2.8 2区生物学 Q2 ECOLOGY

Freshwater Biology Pub Date : 2024-09-10 DOI:10.1111/fwb.14322

Camila López-Allendes, Ángel Gálvez, Xavier Armengol, Bárbara Alvado, Andreu Castillo-Escrivà, Francesc Mesquita-Joanes, Stéphanie Gascón, Rodrigo Ramos-Jiliberto, Carla Olmo

引用次数: 0

摘要

临时池塘是定期干涸的小型湖泊系统。潮湿期的长短决定了水文条件，也决定了暂养池塘中的群落组合。浮游动物物种通过采取一些休眠策略（如形成休眠阶段）来适应干燥。休眠期的孵化是干旱事件后重新定居的一个来源，孵化类群的组成也受水文条件的影响。我们比较了智利中部和西班牙东部两个地中海气候区半永久性和季节性临时池塘中休眠亚群落（休眠阶段）、先驱活跃亚群落（池塘淹没后立即出现的动物）和累积活跃亚群落（水文周期初期、中期和末期出现的动物）的元群落结构和组成。我们的目的是确定水文条件的影响，并确定地中海气候地区之间的元群落模式是否一致。我们在每个地区选择了五个半永久性池塘和五个季节性池塘，对沉积物和活跃的浮游动物亚群落进行取样。通过将沉积物中的孵化实验与野外样本中活性浮游动物的直接计数相结合，我们收集了休眠亚群落和活性亚群落的数据，从而建立了每个池塘中物种出现的非加权双方格网络。我们对获得的网络进行了分析，以确定元群落结构特征（多样性、嵌套性和模块性）的季节性趋势及其与水文条件（半永久性和季节性）和地理位置（智利和西班牙）的关系。在比较不同演替阶段（休眠期、先驱活跃期和累积活跃期）和不同水文条件（半永久性和季节性）下的亚群落时，我们观察到群落结构存在一致的差异。α-和γ-多样性呈现出一致的趋势，即累积活跃亚群落的多样性最高，而休眠亚群落的多样性最低，而且无论在哪个地区，季节性池塘的α-和γ-多样性都更高。此外，在两个地区，先驱活跃亚群落的 β-多样性都较高，不同水文制度之间没有显著差异。与先锋亚群落和休眠亚群落相比，累积活跃亚群落的物种组成异质性较低。不同亚群落和不同水文条件下的模块化和嵌套度值没有发现一致的模式。与我们的假设一致的是，我们观察到在这两个区域，随着时间的推移，分类群逐渐积累，群落也逐渐同质化。与我们的预期相反，水文过程并没有影响这些模式，而且令人惊讶的是，较短的水文周期表现出更高的区域多样性。我们的研究结果表明，作为单一变量的水文过程对暂养池塘的元群落组合没有很强的解释力。因此，需要一个更全面的理论来预测即将到来的水文周期缩短的影响。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Freshwater Biology 生物-海洋与淡水生物学

CiteScore

5.90

自引率

3.70%

发文量

162

审稿时长

2 months

期刊介绍： Freshwater Biology publishes papers on all aspects of the ecology of inland waters, including rivers and lakes, ground waters, flood plains and other freshwater wetlands. We include studies of micro-organisms, algae, macrophytes, invertebrates, fish and other vertebrates, as well as those concerning whole systems and related physical and chemical aspects of the environment, provided that they have clear biological relevance. Studies may focus at any level in the ecological hierarchy from physiological ecology and animal behaviour, through population dynamics and evolutionary genetics, to community interactions, biogeography and ecosystem functioning. They may also be at any scale: from microhabitat to landscape, and continental to global. Preference is given to research, whether meta-analytical, experimental, theoretical or descriptive, highlighting causal (ecological) mechanisms from which clearly stated hypotheses are derived. Manuscripts with an experimental or conceptual flavour are particularly welcome, as are those or which integrate laboratory and field work, and studies from less well researched areas of the world. Priority is given to submissions that are likely to interest a wide range of readers. We encourage submission of papers well grounded in ecological theory that deal with issues related to the conservation and management of inland waters. Papers interpreting fundamental research in a way that makes clear its applied, strategic or socio-economic relevance are also welcome. Review articles (FRESHWATER BIOLOGY REVIEWS) and discussion papers (OPINION) are also invited: these enable authors to publish high-quality material outside the constraints of standard research papers.